Daniel Bergum1, Bjørn Olav Haugen2, Trond Nordseth3, Ole Christian Mjølstad2, Eirik Skogvoll4. 1. Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Department of Anaesthesia and Intensive Care Medicine, St Olav University Hospital, Trondheim, Norway; Norwegian Air Ambulance Foundation, Drøbak, Norway. Electronic address: daniel.bergum@ntnu.no. 2. Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Department of Cardiology, St Olav University Hospital, Trondheim, Norway. 3. Department of Anaesthesia and Intensive Care Medicine, St Olav University Hospital, Trondheim, Norway; Norwegian Air Ambulance Foundation, Drøbak, Norway. 4. Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Department of Anaesthesia and Intensive Care Medicine, St Olav University Hospital, Trondheim, Norway; Norwegian Air Ambulance Foundation, Drøbak, Norway.
Abstract
BACKGROUND: The in-hospital emergency team (ET) may or may not recognize the causes of in-hospital cardiac arrest (IHCA) during the provision of cardiopulmonary resuscitation (CPR). In a previous 4.5-year prospective study, this rate of recognition was found to be 66%. The aim of this study was to investigate whether survival improved if the cause of arrest was recognized by the ET. METHODS: The difference in survival if the causes were recognized versus not recognized was estimated after propensity score matching patients from these two groups. RESULTS: Overall survival to hospital discharge was 25%. After propensity score matching, the benefit of recognizing the cause regarding 1-hour survival of the episode was 29% (p<0.01), and 19% regarding hospital discharge, respectively. Variables commonly known to affect the outcome after cardiac arrest were found to be balanced between the two groups. The largest difference was found in patients with non-cardiac causes and non-shockable presenting rhythms. Patient records and pre-arrest clinical symptoms were the information sources most frequently utilized by the ET to establish the causes of arrest. CONCLUSIONS: Patients suffering an IHCA showed a substantial survival benefit if the causes of arrest were recognized by the ET. Patient records and pre-arrest clinical symptoms were the sources of information most frequently utilized in these instances.
BACKGROUND: The in-hospital emergency team (ET) may or may not recognize the causes of in-hospital cardiac arrest (IHCA) during the provision of cardiopulmonary resuscitation (CPR). In a previous 4.5-year prospective study, this rate of recognition was found to be 66%. The aim of this study was to investigate whether survival improved if the cause of arrest was recognized by the ET. METHODS: The difference in survival if the causes were recognized versus not recognized was estimated after propensity score matching patients from these two groups. RESULTS: Overall survival to hospital discharge was 25%. After propensity score matching, the benefit of recognizing the cause regarding 1-hour survival of the episode was 29% (p<0.01), and 19% regarding hospital discharge, respectively. Variables commonly known to affect the outcome after cardiac arrest were found to be balanced between the two groups. The largest difference was found in patients with non-cardiac causes and non-shockable presenting rhythms. Patient records and pre-arrest clinical symptoms were the information sources most frequently utilized by the ET to establish the causes of arrest. CONCLUSIONS:Patients suffering an IHCA showed a substantial survival benefit if the causes of arrest were recognized by the ET. Patient records and pre-arrest clinical symptoms were the sources of information most frequently utilized in these instances.
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